On April 4, AEI’s Open Source Policy Center (OSPC)launched its first web application, TaxBrain, which allows the public and experts alike to study the effect of individual income and payroll tax policy reforms using open source economic simulation models. The goal of TaxBrain is to make tax policy analysis accessible, transparent, and collaborative. To start thinking about how open source modeling can improve government transparency, read OSPC Managing Director Matt Jensen’s overview of the project and The Wall Street Journal’s take in their recent editorial. To RSVP for a hands-on demonstration where you can try TaxBrain yourself and join OSPC’s collaborators for a wine and cheese reception, click here.